Working prototype of local cache.
Added missing workspace.xml change.
Updated .gitignore to ignore .idea directory.
Removal of WebStorm specific artifacts.
Heavy refactoring of node.js code.  Broke up the code in server.js and moved it into "node" directory.
Replaced client side cache with server side cache, based on Redis.
Merge remote-tracking branch 'origin/master'

Conflicts:
	app/partials/wall.html